Drying of patent-leather.



HEINEJCH SCE'ULZ, OF WORMS, GERMANY.

DRYING or PATENT-LEATHER.

No Drawing.

To all whom it may concern:

Be it known that I, Hnmnron Senor/z, a subject of the Gerinan Emperor, and resident of 57 Alzeyerstrasse, Worms-cathe- Rhine, Germany, have invented certain new and useful Improvements in Drying of PatentLeather, of .Which the following is a specification.

The drying of patent leather causesyas is Well known, considerable difficulties. In recent times artificial, and in particular mer cury light has been substituted instead of sun-light for the final drying. However, it is not always possible to obtain perfectly satisfactory results With the aid of artificial light, and various precautions have to be ob served. Among others a powerful ventilation is necessary in order to prevent the formation of ozone and the detrimental effect thereof. Particularly in summer, when higher temperatures prevail, the drying by aid of artificial light Will cause much difliculty. It has,'now, been found that far hetter results may be obtained if some ammonia is placed into the chamber in which the leather is exposed to the action of the light, so that the patent leather is exposed to the Specification of Letters 'fatent.

the leather in an oven and then subject:

Pat-enter Application filed march 26, 1915. Serial No. 17,302.

action of light and ammonia, Sllnlllt" ously. Thereby the acid components 1 varnish occurring under action of oxidization caused by the light are neutralized, whereby a considerably increased Bil hesive power of the patent leather ob tained.

I claim: a

l. The herein-described method eh" patent leather which comprises y n55 the leather to the action of light and monia vapors.

2. The hereindescrihecl method of dryi patent leather which comprises simultal ously subjecting the leather to the action of lightand ammonia vapors.

3. The herein-described method of drying patent leather which consists in first rlr the leather to the simultaneous action light and ammonia vapors. In witness whereof I have hereunto my hand in presence of two witnesses.

. HEINRZCH Stlllllllii.

Witnesses ,lionnn'r Mrorrans n1,

HENRY HAsrEn. 

